Luo Kaiyue, Zhao Changlin
Yunnan Key Laboratory of Plateau Wetland Conservation, Restoration and Ecological Services, Southwest Forestry University, Kunming 650224, China.
College of Biodiversity Conservation, Southwest Forestry University, Kunming 650224, China.
J Fungi (Basel). 2022 Sep 27;8(10):1020. doi: 10.3390/jof8101020.
are an important genus of wood-inhabiting fungi that have the ability to decompose rotten wood in the forest ecosystem. In this study, we reported three new species of : , , from a subtropical region of Yunnan Province, China. Species descriptions were based on a combination of morphological features and phylogenetic analyses of the ITS and LSU region of nuclear ribosomal DNA. is characterized by the resupinate basidiomata, grandinioid hymenial surface with a greyish tint, monomitic hyphal system and ellipsoid, thick-walled, ornamented basidiospores; has an odontioid hymenial surface with cylindrical to conical, blunt aculei and subglobose to globose, colorless, slightly thick-walled, ornamented basidiospores; has a farinaceous hymenial surface with olivaceous tint, basidia clavate and thick-walled, ornamented, broadly ellipsoid to globose basidiospores. Sequences of the ITS and nLSU rDNA markers of the studied samples were generated, and phylogenetic analyses were performed with maximum likelihood, maximum parsimony, and Bayesian inference methods. After a series of phylogenetic analyses, the 5.8S+nLSU dataset was constructed to test the phylogenetic relationship of with other genera of Hydnodontaceae. The ITS dataset was used to evaluate the phylogenetic relationship of the three new species with other species of . Using ITS phylogeny, the new species was retrieved as a sister to with moderate supports; formed a single lineage and then grouped with and ; while formed a monophyletic lineage with , and .
是木生真菌的一个重要属，具有分解森林生态系统中腐朽木材的能力。在本研究中，我们报道了来自中国云南省亚热带地区的三个新物种： 、 、 。物种描述基于形态特征以及核糖体DNA的ITS和LSU区域的系统发育分析。 的特征是平伏的担子果、具灰白色调的颗粒状子实层表面、单系菌丝系统以及椭圆形、厚壁、具纹饰的担孢子； 具有齿状子实层表面，有圆柱形至圆锥形、钝的小刺，以及近球形至球形、无色、稍厚壁、具纹饰的担孢子； 具有粉质的子实层表面，带橄榄色，担子棒状且厚壁、具纹饰，担孢子宽椭圆形至球形。生成了所研究样本的ITS和nLSU rDNA标记序列，并采用最大似然法、最大简约法和贝叶斯推断法进行系统发育分析。经过一系列系统发育分析后，构建了5.8S + nLSU数据集以检验 与齿菌科其他属的系统发育关系。ITS数据集用于评估这三个新物种与 的其他物种的系统发育关系。利用ITS系统发育树，新物种 被检索为 具有适度支持的姐妹种； 形成一个单系分支，然后与 和 聚在一起；而 与 、 和 形成一个单系分支。
